V4L/DVB (6014): vivi: use videobuf_read_stream()

videobuf_read_stream is more efficient than videobuf_read_one
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/vivi.c

@@ -1123,7 +1123,7 @@ vivi_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
 	if (fh->type==V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 		if (res_locked(fh->dev))
 			return -EBUSY;
-		return videobuf_read_one(&fh->vb_vidq, data, count, ppos,
+		return videobuf_read_stream(&fh->vb_vidq, data, count, ppos, 0,
 					file->f_flags & O_NONBLOCK);
 	}
 	return 0;